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QUESTION 4 If you take a 171 mL of a 1.4 M NaCl solution and dilute...
QUESTION 4
If you take a 171 mL of a 1.4 M NaCl solution and dilute it to
500 mL, what is the molarity of the final solution?
Enter the numerical answer in decimal notation
QUESTION 10
Information - Colligative
Properties
Colligative properties of solutions are those properties which
depend only on the number of dissolved solute particles in solution
not the chemical properties of the solute. For example when a
solute is dissolved in a solvent, vapor pressure
depression...
Which of the following regarding colligative properties of a solution is NOT correct? a. The temperature...
Which of the following regarding colligative properties of a solution is NOT correct? a. The temperature range over which a solution remains liquid is larger than that of the pure solvent due to the presence of solute particles. Cb. Vapor pressure reduction is a colligative property. c. Colligative properties depend on the concentration of the particles dissolved in the solvent. Cd. The freezing point of a solution increases as the concentration of solute increases. e. The change in the boiling...
massa volum volum mo olu 5. In which of the following solvents would you expect KBr...
massa volum volum mo olu 5. In which of the following solvents would you expect KBr to be most soluble? a) CH4 (hexane) d) CCM (carbon tetrachloride) b) CH CH OH (ethanol) e) C.Hz (cyclohexane) c) CH. (benzene) ___6. A 9.50 % by mass solution of acetone (C,H,O) in water has a density of 0.9849 g/mL at 20°C. What is the molarity of this solution? a) 0.621 M b) 1.61 Me) 1.66 Md ) 1.71 M e ) 16.9 M...
a) Describe the condition for the formation of a solution in terms of strength of interactions...
a) Describe the condition for the formation of a solution in terms of strength of interactions between the molecules of solute and solvent. b) How does the vapor pressure of a solution change in comparison with the one for the pure solvent? Give 2 reasons why. c) List 2 colligative properties and mention if they are higher or lower in the solution compared with the pure solvent.
What volume, in milliliters, of 4.0 M NaOH is needed to prepare 80.0 mL of 0.20...
What volume, in milliliters, of 4.0 M NaOH is needed to prepare 80.0 mL of 0.20 M NaOH by dilution? 4.0 mL 2.6 x 104 mL 3.9 x 103 mL 5.4 mL Question 10 2 pts Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true false status of the statements using the choices. (1) A saturated solution always contains excess undissolved solute. (2) In aqueous solution, Ba²+ ion combines with CO32-...
In which of the following pairs of properties are both members of the pair colligative properties?...
In which of the following pairs of properties are both members of the pair colligative properties? density, boiling point vapor pressure, flammability solubility, freezing point freezing point, boiling point Question 6 Which of the following solutions would always contain 5.00 g of solute per 45.0 g of solvent? 11.1% (m/m) solution 20.0% (m/m) solution Ο Ο Ο 10.0% (m/m) solution 25.0% (m/m) solution
answer 1-4 Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The...
answer 1-4
Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The attraction of the water to the ions in NaCl is through dipole-dipole IFs. Water is considered the solute and NaCl the solvent. The partially positive oxygen in water is attracted to the chloride ion. d. The process of separating the sodium ions from the chloride ions is endothermic. All of these statements are true. polar For the following solution, describe the deviation with respect...
What is the relationship between the moles of solute and the mass of solute? Rewrite the molality expression in terms o...
What is the relationship between the moles of solute and the
mass of solute?
Rewrite the molality expression in terms of grams and molecular
weight.
Background:
Properties that depend on the concentration of particles in solution are called colligative properties. The number of particles in a solvent can affect the freezing or boiling point of solvent. To express the effect of concentration on freezing point or boiling point, molality is used in place of molarity. Molality (m) is the number...
2. Identify the following statements as true or false. :: A 5.0% NaCl solution has a...
2. Identify the following statements as true or false. :: A 5.0% NaCl solution has a lower freezing point than a 2.0% NaCl solution. :: A 5.0% sucrose solution has a higher boiling point than pure water. :: A 5.0% sucrose solution has a higher osmotic pressure than a 10% sucrose solution. :: A 10% NaCl solution has a higher boiling point than a 5% NaCl solution. :: A 2.0% NaCl solution has a higher vapor pressure than pure water....
7-86 Indicate whether each of the following statements concerning boiling and boiling point is true or...
7-86 Indicate whether each of the following statements concerning boiling and boiling point is true or false. a. A liquid can be made to boil at temperatures higher than its normal boiling point. b. A liquid can be made to boil at temperatures lower than its normal boiling point. c. In a boiling liquid, vapor formation occurs within the body of the liquid. d. To compare the boiling points of two different liquids, the external pressure should be the same.
QUESTION 4
If you take a 171 mL of a 1.4 M NaCl solution and dilute it to
500 mL, what is the molarity of the final solution?
Enter the numerical answer in decimal notation
QUESTION 10
Information - Colligative
Properties
Colligative properties of solutions are those properties which
depend only on the number of dissolved solute particles in solution
not the chemical properties of the solute. For example when a
solute is dissolved in a solvent, vapor pressure
depression...
Which of the following regarding colligative properties of a solution is NOT correct? a. The temperature range over which a solution remains liquid is larger than that of the pure solvent due to the presence of solute particles. Cb. Vapor pressure reduction is a colligative property. c. Colligative properties depend on the concentration of the particles dissolved in the solvent. Cd. The freezing point of a solution increases as the concentration of solute increases. e. The change in the boiling...
massa volum volum mo olu 5. In which of the following solvents would you expect KBr to be most soluble? a) CH4 (hexane) d) CCM (carbon tetrachloride) b) CH CH OH (ethanol) e) C.Hz (cyclohexane) c) CH. (benzene) ___6. A 9.50 % by mass solution of acetone (C,H,O) in water has a density of 0.9849 g/mL at 20°C. What is the molarity of this solution? a) 0.621 M b) 1.61 Me) 1.66 Md ) 1.71 M e ) 16.9 M...
What volume, in milliliters, of 4.0 M NaOH is needed to prepare 80.0 mL of 0.20 M NaOH by dilution? 4.0 mL 2.6 x 104 mL 3.9 x 103 mL 5.4 mL Question 10 2 pts Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true false status of the statements using the choices. (1) A saturated solution always contains excess undissolved solute. (2) In aqueous solution, Ba²+ ion combines with CO32-...
In which of the following pairs of properties are both members of the pair colligative properties? density, boiling point vapor pressure, flammability solubility, freezing point freezing point, boiling point Question 6 Which of the following solutions would always contain 5.00 g of solute per 45.0 g of solvent? 11.1% (m/m) solution 20.0% (m/m) solution Ο Ο Ο 10.0% (m/m) solution 25.0% (m/m) solution
answer 1-4
Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The attraction of the water to the ions in NaCl is through dipole-dipole IFs. Water is considered the solute and NaCl the solvent. The partially positive oxygen in water is attracted to the chloride ion. d. The process of separating the sodium ions from the chloride ions is endothermic. All of these statements are true. polar For the following solution, describe the deviation with respect...
What is the relationship between the moles of solute and the
mass of solute?
Rewrite the molality expression in terms of grams and molecular
weight.
Background:
Properties that depend on the concentration of particles in solution are called colligative properties. The number of particles in a solvent can affect the freezing or boiling point of solvent. To express the effect of concentration on freezing point or boiling point, molality is used in place of molarity. Molality (m) is the number...
2. Identify the following statements as true or false. :: A 5.0% NaCl solution has a lower freezing point than a 2.0% NaCl solution. :: A 5.0% sucrose solution has a higher boiling point than pure water. :: A 5.0% sucrose solution has a higher osmotic pressure than a 10% sucrose solution. :: A 10% NaCl solution has a higher boiling point than a 5% NaCl solution. :: A 2.0% NaCl solution has a higher vapor pressure than pure water....
7-86 Indicate whether each of the following statements concerning boiling and boiling point is true or false. a. A liquid can be made to boil at temperatures higher than its normal boiling point. b. A liquid can be made to boil at temperatures lower than its normal boiling point. c. In a boiling liquid, vapor formation occurs within the body of the liquid. d. To compare the boiling points of two different liquids, the external pressure should be the same.
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